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(IAAC) Obj: M 7 - Inst: 120mm KONUS refractor, f/8.33, equatorial
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Observation Poster: Natko Bajic <natkobajic@yahoo.com>
Observer: Natko Bajic
Your skills: Intermediate (some years)
Date/time of observation: July, 09th, 2001.
Location of site: Vinisce, near Split, Croatia (Lat 43.5, Elev 10m)
Site classification: Rural
Sky darkness: 5 <Limiting magnitude>
Seeing: <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 120mm KONUS refractor, f/8.33, equatorial
Magnification: 40x
Filter(s): None
Object(s): M 7
Category: Open cluster.
Class:
Constellation: Sco
Data: mag 3.3 size 80'
Position: RA 17h:53.9m DEC -34°:49'
Description:
Ptolemy's open cluster in Scorpio, larger and brighter, than M 6,
consisting of brighter stars, but less dense. Its main part looks
like rectangle, with fainter part around it. There are many 6th and
7th magnitude stars in the field of view, and the most interesting
feature of this cluster is row of about half dozen of reddish stars
in it, unlike other blue stars. Sketch is available at the mentioned
URL.
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Optional related URLs: http://www.geocities.com/natkobajic
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